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Old 04-18-2019, 02:09 PM   #1
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Dash AC Condensation

We had the dash AC (Evans Tempcon) on for several hours while driving north out of Ft. Myers. Condensation formed on the ducts behind the dash and it dripped on the pedals. Is this normal due to humidity, the difference in the indoor and outdoor temperatures, ??, or does this indicate a problem somewhere?

Eric and Linda
2016 Newmar Ventana 4369 (Full Timers since May 2016)
2011 Honda Element & 2015 Co-Motion Equator Tandem
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Old 04-18-2019, 03:55 PM   #2
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Might be a bit low on gas.

2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
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Old 04-18-2019, 07:50 PM   #3
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The condensation should go out of the dash housing before it get to a depth to drip inside the coach.
Possible problems are ; a plugged condensate drain hose or a crack or bad seal in the housing , around the evaporator.

Here's a photo of my HVAC housing ; above the gen set ; with the air inlets taped off ( keeps the dust out when I'm parked in the desert) arrow is the drain hose.
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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Old 04-19-2019, 05:36 AM   #4
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Mine does the same thing. It's not an issue with the evap drain, it's that the non insulated ductwork gets so cold that condensation forms on the outside and drips on my feet while driving. I thought about adding insulation to the supply hoses, but that would be a real nightmare of a job. Now I drive barefoot and it is rather refreshing....
Jim, Bonnie & Irma (our hurricane rescue)
2016 DSDP 3736 all electric, custom paint and interior. HWH Active Air coming soon
2014 Wrangler Altitude

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